underhung

un·der·hung

U0052700 (ŭn′dər-hŭng′)adj. Supported from above, as a crane that moves along a track supported from a beam.

underhung

(ˌʌndəˈhʌŋ) adj1. (Anatomy) (of the lower jaw) projecting beyond the upper jaw; undershot2. (Architecture) (of a sliding door, etc) supported at its lower edge by a track or rail

Thesaurus

Adj.	1.	underhung - supported from below especially resting on a track instead of suspended from above; "underhung sliding doors"supported - held up or having the weight borne especially from below; "supported joints in a railroad track have ties directly under the rail ends"
	2.	underhung - having a lower part projecting beyond the upper; "an underhung jaw"; "undershot bulldog"undershot, underslungprotrusive - thrusting outward